update demo url

index.html

@@ -161,7 +161,7 @@ <h1 class="title is-1 publication-title">VIGC: Visual Instruction Generation <br
 </section>
 
 <div class="row-container">
-  <iframe height="750px" src= "https://g-app-center-035025-0066-904bm4b.openxlab.space/" class="second-row"></iframe>
+  <iframe height="750px" src= "https://g-app-center-001807-6513-180xn4e.openxlab.space/" class="second-row"></iframe>
 </div>
 <!-- Paper abstract -->
 <section class="section hero">